Migratory Birds of the Great Lakes University of Wisconsin Sea Grant Institute
 about habitat birds + science 20 birds
aerialist raptors
copyright UW Sea Grant, writer: L. Wiland, design: T. Yao contact us credits

Double-crested Cormorant Conservation Status, page 2

Despite their increasing abundance, Cormorants still show the possible effects of chemical pollution. Some birds are born with deformities like crooked bills or oddly shaped feet, and scientists speculate there may be a link to lingering chemical contaminants in the Great Lakes.

ML Reeb writer: Laurence Wiland design: T. Yao